Folding opera-glass.



No. 706,5l2.

Patented Aug. l2,- |902. E. BATAULT.

FOLDING OPERA GLASS.

(Application med Mar. 11, 1902.) (No Model.) 2 Sheets-Shee l.

Inventor 7M L Y Attofneys wz man mns co. moram'no.. wnsmuarou. nA c N0. 705,5l2. Patented Allg. l2, |902.

E. B'ATAULT.

FOLDING OPERA GLASS.

(Appumm med In. 11, 1902.)

2 Sheets-Sheet 2.

Inventar Attorneys Witnesses d. 7.1i

THE MKII PETER! 60,. PNOYO-UDG, WASHINGTON. DA C4 UNITED STATES;

EMILE BATAULT, OF GENEVA,`SVVITZERLAND.

FOLDING opERAsGLAss.

sPncrFrcAfrIoNrormingpart of Letters-Patent No. IP061,512, dated August 12, 190e. Application iiledrMarch 11, 1902. Serial No. 97,701. (No model.)

To all whom, t may concern.:

Beit known that I, EMILE BATAULT, a citizen of the Republic of Switzerland, residing at Geneva, in the canton of Geneva, Switzerland, have invented a certain new and useful Improvement in Folding Opera-Glasses, of which the following is a description.

My invention relates to improvements in folding opera-glasses; and the object is to provide a device of this kind which shall be simple and cheap in construction and which can be folded into little compass when not used.

Broadly stated, the invention comprises a suitable frame which carries the objectives pivotally mounted thereon, so as to be capable of occupying either, a plane parallel or perpendicular to the longitudinal axis of the device, said frame also carrying `eyepiecelenses, with means for adjusting the same, so as to focus them with respect to the objectives, and the frame being combined with a folding or expansible case adapted to be'Y opened to permit the movementof the objectives to their operative position.

In order that the invention may be better understood, attention is directed to the ac` companying drawings, forming part of this specification, and in which- Figure lis a plan view of the device, showthe same folded with the eyepiece-lenses retracted; Fig.,2, a side view of thesame; Fig. 3, a similar view showing the'device open with the eyepiece-lenses moved to their maximum position; Fig. 4, asection on the line 4 4 of Fig. 1, showing the case in dotted lines; and Fig. 5, a section on the line 5 5 of Fig. 2, also showing the case in dotted lines.

In all of the views corresponding parts are represented by the same numerals of reference.

1 represents the main plate of the frame, to which is secured a light steel band 2, preferably having a cut-away nose-opening 3 therein. Secured to the band2 are the two sections 4 and 5 of the case, made, preferably, of leather or of a material covered with leather, the flexibility of which permits relative movement of the case-sections from the position shown in Fig. 2 to that shown in Fig. 3. These case-sections are normally opened by steel leaf-springs 6, either fixed to the case (see Fig. 4) or which may be xed to the frame and may be closed and locked in the position shown in Fig. 2 by a latch 7 of any suitable form. Passing through the plate l of the frame is an adjusting-rod 8, carrying a plate 9 at its end, to which are secured the tubes 10, containing the eyepiece -lenses The plate 9 is guided in its movements toward and away from the plate 1 by the guiderods 1l, passing through openings in the plate 1 and through sockets 12 in the frame 13. Surrounding the adjusting-rod 8 is a nut 14, having a threaded connection with said rod, as shown, so that the turning movements of the nut will move the plate 9 toward and away from the plate 1 to properly focus the glass. The nut 14 is guided at its free end'by an adjusting-screw 15, passing through a cross-piece 16 in the frame 13. The frame 13 is also provided with sockets 17 at its f ree end, which carrya shaft 18, to the ends of which are secured the objectives 19. The shaft 18 can be turned so as to dispose the objectives 19 in a plane parallel to the axis of the device, as in Fig. 2, when the glass is closed, or toa plane perpendicular to that axis, as in Fig. 3, when theglass is open. The shaft 1811s providedwith a squared portion 20, with which a spring 2l coperates, so as to frictionally lock the objectives in either position. A finger-piece 22 extends to one side, and by means of which the objectives will be turned when desired. The nut 14 is provided with a thumb-wheel 23, by means of which it may be adjusted, and which is disclosed through openings 24 in the sections 4 and 5 of the case. These sections are connected b v bellows 25 on each side, so as to exclude light.

Normally the parts will occupy the position shownin Fig. 2, the objectives extending in a plane with the frame 13 and the casesections 4 and 5 being locked together. When the device is to be used, the case-sections are unlocked, and the .springs iforce them apart. The objectives are now turned to the position shown in Fig. 3, and the eyepiece-lenses `are properly adjusted by turning the nut 14.

Having now described my invention, what I claim is- 1. Inafoldingopera-glass, the combination with a band, two casesections hinged to said IOO band, bellows between said case-sections, and springs directly engaging said case-sections for normally separating the same, of a frame within the case-sections, eyepiece-lenses carried by said frame, and objectives pivoted to said frame, substantially as and for the purposes set forth.

2. In a foldingopera-glass, the combination with a band, two case-sections hinged to said band, bellows between said case-sections, and springs directly engaging said case-sections for normally separating the saule, of a frame within the case-sections, eyepiece-lenses carried by said frame, objectives pivoted to said frame, and means for adjusting the eyepiecelenses with respect to the frame, substantially as and for the purposes set forth. 

